Improved machine foe gsooving sheet metal



W. SERVSS.

MACHINE EOE GROWING SEEEE METAL,

om 6 OO 1 2., G, u n a U. J ,W d Il/ m f nu t n@ I! D..

,AY/, EN@ E l-.L-ILFLEFL( @leiten tntrs atwt @ffice WILLIAM SERVISS, OFSIDNEY, OHIO, ASSIGNOR .'lO JASON MoVAY AND JASON S. GAREX LettersPatent No. 78,486, dated June 2, 1868.

IMPROVED VMACHINE FOR GROOVING SHEET METAL.

TO ALL WI'IOM IT MAY CONOERN Be it known that I, WILLIAM Snnvlss, ofSidney, in the county of Shelby, and State of Ohio, have invented a newand improved Machine for G-rooving Sheet Metal', and I do hereby declarethat the followine is a inl] clear, and exact description thereof, whichwill enable others skilled in the art to make and use the slime, reference being had t o the accompanying drawings, forming part of.thisspecitication. l

This invention relatos to a new and improved method of constructingtools for grooving the seams of storepipe, sheet-iron stoves,sheet-metal conductors,`and for all like purposes for whichgrooving-tools are used,

whereby thc seam is formed more rapidly, and upon the inside instead ofthe outside, as is now commonly the case.

In the accompanying plate of drawings- Figurc l'is a side view of myinvention, a part being` broken away to show the construction. l Figure2 represents a vertical cross-section, taken in the line fr x, iig. 1. A

Similar' letters of reference indicate corresponding parts.

Upon a metallic upright, A, of sucicnt size for strength, are twohorizontal parallel metallic arms, B

and C.

The arms B and C 'are in the same vertical line, and are either e partof the'upright, A, or arc rigidly secured thereto.

The arms B and O are of sulcentlength to receive the length ofstove-pipe or other article to bcgrooved, and of suiicient distancevapart to receive the rack D between the same.

The rack D is of' the form shown in the drawing, supported at one end bythe seaming-wllccl G, and driven backwards and forwards by a spur-gearedwheel, operated by a crank, as shown.

The rack D is guided upon the arm B, upon which the wheel G runs, byguides attached to the rack D, and extending upwards on each side of theupper arm O.

The seeming-wheel Gr is held down upon arm B by a spring andfriction-roller, las shown. v

Secured to the. arms C, bythe supports E', as shown, is u gauge, E. Thegauge E extends the entire length of thc a'rm B, as shown, is parallelthereto, and only so far removed therefrom as to admit the sheet ofmetal between the arm B and saidA gauge E. The gaugcE is placed near oneedge of thevarm B, directly over the oi'set F, the face of the AwheelG'running against said gauge E and said offset F.

The oifsct F is a tapering metallic bar, placed in a'tnpering spline inthe side of the arm B, as shown, said spline being widest at thejunction of thcarm B with the upright, A, as shown. l

Theolset F is higher than the arm B at the lowest position of scido'set. rhe ofset F maybe raised'or depressed by moving the same forwardor backward in the spline in the arm B, being placed upon said arm Bwith the wider end next to the upright, A.

The oilsct F is held upon the arm B by screws, as shown, said odset. Fbeing furnished with the slots a, which permit a suicicnt forward motionto allow of the adjustment of the said oli'set to sheets of mctalvofdifferent thickness.

The operation is such. that the pipe, orfothcr article to be scanned,having been properly formed and the edges locked, said pipe is slippedupon the arm-B under the gauge E, with thecdge of the lock firmly heldagainst thesaid gauge E, when, by running. the wheel G over the lock,the saine is both grocved and folded, and set firmly down, leaving thescam 'entirely on the inside oll the pipe or other article to be scamedI claim as new, and desire to Secure by Letters Pntentv '1. The olisctF, substantially as shown and described, in combination with rack D,wheel G, and arm B, as and for theV purpose set forth.

2. The gauge E, constructed und operating substantially as and for thepurpose shown and described, in combination with the arms O and B,and'whccl G, all as st forth.

' WLLLIAM snm/Iss.

Witnesses:

SAMUEL McCULLoUGn, T. F. WILKINSON.

